docs: def save(self, fname, mode=None, validate=True, wd=False, inline=False,
               relative=True, pack=False, encoding='utf-8'):
          """Save workflow to file
  
          For nlppln, the default is to save workflows with relative paths.
          """
          super(WorkflowGenerator, self).save(fname,
                                              mode=mode,
                                              validate=validate,
                                              wd=wd,
                                              inline=inline,
                                              relative=relative,
                                              pack=pack,
                                              encoding=encoding)